[PATCH i-g-t 4/5] lib/v3d: Add helper to query the V3D hardware version

["Maíra Canal" <mcanal@igalia.com>]

Add a helper to help tests to branch on the hardware version. Some HW
configurations can change from v42 to v71, such as performance counter
IDs, and this helper will assist tests to retrieve the HW version.

Signed-off-by: Maíra Canal <mcanal@igalia.com>
---
 lib/igt_v3d.c | 12 ++++++++++++
 lib/igt_v3d.h |  1 +
 2 files changed, 13 insertions(+)

diff --git a/lib/igt_v3d.c b/lib/igt_v3d.c
index eb1adaaa4..2353c97a8 100644
--- a/lib/igt_v3d.c
+++ b/lib/igt_v3d.c
@@ -114,6 +114,18 @@ igt_v3d_get_param(int fd, enum drm_v3d_param param)
 	return get.value;
 }
 
+uint32_t
+igt_v3d_get_version(int fd)
+{
+	uint32_t ident0 = igt_v3d_get_param(fd, DRM_V3D_PARAM_V3D_CORE0_IDENT0);
+	uint32_t ident1 = igt_v3d_get_param(fd, DRM_V3D_PARAM_V3D_CORE0_IDENT1);
+
+	uint32_t major = (ident0 >> 24) & 0xff;
+	uint32_t minor = (ident1 >> 0) & 0xf;
+
+	return major * 10 + minor;
+}
+
 void *
 igt_v3d_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot)
 {
diff --git a/lib/igt_v3d.h b/lib/igt_v3d.h
index 70dd6f011..e3a9f381b 100644
--- a/lib/igt_v3d.h
+++ b/lib/igt_v3d.h
@@ -72,6 +72,7 @@ void igt_v3d_free_bo(int fd, struct v3d_bo *bo);
 /* IOCTL wrappers */
 uint32_t igt_v3d_get_bo_offset(int fd, uint32_t handle);
 uint32_t igt_v3d_get_param(int fd, enum drm_v3d_param param);
+uint32_t igt_v3d_get_version(int fd);
 void *igt_v3d_mmap_bo(int fd, uint32_t handle, uint32_t size, unsigned prot);
 
 void igt_v3d_bo_mmap(int fd, struct v3d_bo *bo);
-- 
2.54.0